Mechanical refrigeration



May. 19, 1931.

c. c. SPREEN MECHANICAL REFRIGERATION Filed Feb. 21 1927 1 1 l I i I III I. I'll l l l I l I l l l l I I I.

FIG. 3

CHARLES c. \SPREEN INVENTOR yMMfi wm ATTORNEYS Patented Ma 1 9, 1931UNITED sra'rlzs PAT NT OFFICE CHARLES C. SPREEN, OF DETROIT, MICHIGAN,ASSIGNOB T0 KELVIN'A'I'OR OOBPORL- 'IION, OI DIMBOIT, MICHIGAN, ACORPORATION 01 MICHIGAN MECHANICAL REFRIGERATION Application fledFebruary 21,1987. Serial llo. 168,764.

My invention relates to mechanical refrigeration, and particularly tomeans for increasing the heat absorbing power of a re-.

irigeration expansion unit, and the principal object of my invention isto provide new and improved means of this type. In the drawingsaccompanying this specification and forming a part of this application Ihave shown, for purposes of illustration, two forms which myinvention-may assume, and in these drawings:

Figure 1 is a front elevation of one embodiment of my invention,

Figure 2 is a side elevatlon thereof, while Figure 3 is a frontelevation of another embodiment of iny-invention.

The embodiment, of my invention shown in Figures 1 and 2 comprises arefrigerant expansion drum 11, of the usual float valve type, andrefrigerant tubes 12 attached at spaced intervals throughout the lengthof the drum 11 at substantiall diametrically opposed points and depening below the drum 11 in the form of loops 13.

in order to increase the heat absorbing power of the expansion unit theloops 13 are encased in twin sets of receptacles 14: adapted to containbrine or similar heat conducting material thereby'increasing the heatabsorbing power of the loops 13 and through them of the expansion drum11.

In the embodiment of my invention shown in Figure 3 sleeve-likereceptacles 15 are disposed in the space between the twin receptacles 14and arranged to accommodate trays v16 forthe formation of artificial iceunder tne action of the refrigerating unit.

From the above it will be obvious to those skilled in the art that Ihave provided new and improved means for increasing the heat absorbingpower of a refrigerant expansion unit. At the same time it "will beobvious. to

those skilled in the art that the embodiment of my invention hereinshown and described may be variously changed and modified withoutdeparting from the spirit of my invention or sacrificing the advantagesthereof, and it therefore will be understood that the disclosurehereinis illustrative only, and

that my invention is not limited thereto.

I claim:

1. In refrigerating apparatus, a refrigerant expansion unit comprising adrum, ipe loops depending from said druman in communication therewith,said pipe ,loops being arranged in spaced relation, and brine containersenclosing the major portions of the depending loops on each side of saiddrum, said brine containers being spaced in parallel relation.

2. In refrigerating apparatus, a refrigerant expansion unit comprisingadrum, separate depending pipe loops arranged in rows on each side ofsaid drum, said pi e loops being n open communication with said drum,and separate heat transfer means thermally associated with the loops ineach of said rows.

3. In refrigerating apparatus, a refrigerant expansion unit comprising adrum, de pending pipe loops arranged in rows on each side of said drumand in communication therewith, a heat transfer means associated inthermal contact with each row of loops, and tray receiving sleevessecure i intermediate said heat transfer means and in thermal contacttherewith.

In testimony whereof I hereunto aflix my signature.

CHARLES C. SPREEN.

